In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Article: Former South African President Nelson Mandela who was treated for a recurring   lung infection, dies on Dec. 5th, 2013, at the age of 95. People around the world are mourning the loss of the country's first black president. He was often called humble, charming, loyal person and a man who cared about others. "He seemed to have that special charismatic  personality," said Herman Cohen, U.S. assistant secretary of state for Africa from 1989 to 1993. "He became the symbol in the fight against _ ." Mandela was born on July 18, 1918. As a young man he became active in the anti-apartheid movement and joined the African National Congress, or ANC, in the 1940s. The white-led government banned the ANC in 1960, but the group continued to operate secretly. Mandela became head of the group's new military wing, coordinating a sabotage campaign against South African military and government targets. In 1962, he was arrested and put on trial for his actions and sentenced to life in prison on Robben Island off the coast of Cape Town. He spent 18 years there, refusing a government offer to release him if he would renounce the ANC's armed struggle. But he was freed in 1990 after South African President Frederik de Klerk legalized all political parties and discharged most political prisoners. Shortly after his release, Mandela was elected president of the African National Congress. And in 1994, when the ANC won South Africa's first all-race elections, he was inaugurated   as the county's first black president at age 75. "Never, never and never again shall it be that this beautiful land will again experience the oppression of one by another," he said. President Mandela said he would stay for only one five-year term. Cohen says Mandela earned international respect for South Africa's national reconciliation. "Mandela devoted himself mainly to rallying the Africans to this new era to work on economic development, having good education, also he was very much of a spokesman on the international scene." he said. In 1993, Mandela shared the Nobel Peace Prize with his once bitter enemy F.W. de Klerk for their contribution to the peace process in South Africa. After receiving the award, Mandela praised the South African people. "All have created a society which recognizes that all people are born equal," he said. In a country torn apart by years of racial conflict, Nelson Mandela is considered a remarkable leader -- a man who turned South Africa away from violence and hatred into a country of greater peace and understanding. 
 Answer: 28 years
How long was Nelson Mandela sent to prison?

Article: While the rest of his family was happily feasting during Spring Festival, Zu Xinming, a Senior 2 student in Shaanxi province, was frowning. "Every time my  s leave after dinner, almost half of the dishes are unfinished," he said, and we throw away a lot of food. Nowadays in China, food waste is a widespread problem. Each year, Chinese people throw away the equivalent   of about 50 million tons of grain, an amount which could feed 200 million people, according to Xinhua News Agency.    One reason is that people are unaware of the issue.    "Some of my friends don't care at all when they can't finish the food on their plates," said Zu, "and they even throw it away if they don't like the taste."    Gong Tao, an official from the Communist Youth League of China Committee of Central South University in Hunan province, is worried about the decreasing awareness of food waste on his campus in recent years.    "Students don't know how much hard work others go through in order to provide their food," Gao told China Education Daily.    One deeper factor is the Chinese cultural value of "face". In a Chinese banquet   setting, the host feels great shame when guests' plates are empty. "Serving lots of food is the Chinese way of showing respect to guests and displaying generosity," Yu Changjiang, a sociologist at Peking University, told Xinhua.     Huge public spending on government banquets is also worsening the situation. Government banquets at the taxpayer's expense   have become "a major source of waste", commented People's Daily.    The good news is that people are already beginning to take action. On Jan 16, 10 restaurants with 749 outlets   in Beijing joined an "eating up" campaign promoted by Xu Xiake, deputy director of China Land and Resources News. These restaurants have begun serving half-sized meals and small dishes.    So, how can you help reduce food waste? Discuss with your family regularly about your food preferences and how much you want to eat. Eat all of the food on your plate and in your bowl. And each week, help your parents clean the fridge so that all of the food gets eaten before it goes to waste. 
 Answer: In Chinese culture, people show their welcome by serving lots of food.
According to the passage, which of the following is true?

Article: Advertising is a form of communication that typically attempts to persuade potential  customers to purchase or to consume more of a particular brand of product or service. Many advertisements are designed to produce increased consumption of those products and services through the creation and reinforcement  of "brand image" and "brand loyalty". For these purposes, advertisements sometimes fixes their persuasive message with fact-based information. Every major medium is used to deliver these messages, including television, radio, cinema, magazines, newspapers, video games, the Internet and billboards. Advertising is often placed by an advertising agency on behalf of a company or other organization.  Organizations that frequently spend large sums of money on advertising that sells what is not, strictly speaking, a product or service include political parties, interest groups, religious organizations, and military recruiters. Non-profit organizations are not typical advertising customers, and may rely on free modes of persuasion, such as public service announcements.  Advertising spending has increased greatly in recent years. In 2006, spending on advertising has been estimated at $155 billion in the United States and $385 billion worldwide , and the latter to be over $500 billion by 2010. While advertising can be seen as necessary for economic growth, it is not without social costs. Unsolicited  commercial email and other forms of spam  have become so widespread as to have become a major trouble to users of these services, as well as being a financial burden on internet service providers. Advertising is increasingly invading public spaces, such as schools, which some critics argue is a form of child exploitation . 
 Answer: One World, One Dream

Which of the following slogans is different from the other three according the passage?

